Finding the Fourth Proportional to 2,073.55, 2,861.77 and 1,189.18

Step by Step Solution

1. Step 1: Write the proportion equation
   2,073.55 : 2,861.77 = 1,189.18 : x
2. Step 2: Convert to fraction form
   2,073.55/2,861.77 = 1,189.18/x
3. Step 3: Cross multiply
   2,073.55x = 2,861.77 × 1,189.18
4. Step 4: Simplify right side
   2,073.55x = 3,403,149.52
5. Step 5: Solve for x
   x = 3,403,149.52/2,073.55
6. Step 6: Final answer
   x = 1,641.22